Author(s)

Hongwen Du, Wenzhong Zhu^*, Ke Peng, Weifu Li

College of Computer Science and Engineering, Sichuan University of Science and Engineering, Yibin, China.

In order to solve the problems of the traditional flame detection method, such as low detection accuracy, slow detection speed and lack of real-time detection ability. An improved high speed flame detection method based on YOLOv7 is proposed. Based on YOLOv7 and combined with ConvNeXtBlock, CN-B network module was constructed, and YOLOv7-CN-B flame detection method was proposed. Compared with the YOLOv7 method, this flame detection method is lighter and has stronger flame feature extraction ability. 2059 open flame data sets labeled with single flame categories were used to avoid the enhancement effect brought by high-quality data sets, so that the comparative experimental effect completely depended on the performance of the flame detection method itself. The results show that the accuracy of YOLOv7-CN-B method is improved by 5% and mAP is improved by 2.1% compared with YOLOv7 method. The detection speed reached 149.25 FPS, and the single detection speed reached 11.9 ms. The experimental results show that the YOLOv7-CN-B method has better performance than the mainstream algorithm.

Light Weight, Detection of Flame, YOLOv7-CN-B, YOLOv7, ConvNeXt

Du, H. , Zhu, W. , Peng, K. and Li, W. (2022) Improved High Speed Flame Detection Method Based on YOLOv7. Open Journal of Applied Sciences, 12, 2004-2018. doi: 10.4236/ojapps.2022.1212140.